"Limitless" (unrated, 118 minutes) —Eddie (Bradley Cooper) gets hooked on a new designer drug that allows him, by popping a little clear tablet once a day, to access 100 percent of his brain. Almost overnight, Eddie goes from being a scruffy, mumbling novelist with writer's block and a girlfriend (Abbie Cornish) who has just dumped him to a multilingual motormouth with a successful stock portfolio, a photographic memory, the analytic powers of Dr. Watson, the martial-arts moves of Jason Bourne and the pick of every beautiful woman in New York.
Soon Eddie is on the run from several disreputable types who have also gotten a jones for mother's little helper, called NZT. Understandably, he doesn't want to share it. But he also doesn't want to die.
In director Neil Burger's adrenalized, sharply edited and surprisingly engaging thriller, Eddie's choice seems to be between getting knifed by another addled NZT addict or killed by the drug itself.
Contains violence, drug abuse, sexuality and some crude language. DVD extras: extended cut; alternate ending.